User’s Handbook FF310 Electrical Circuits FaultFinder
Table of contents.
4 - Setting the sensitivity level 5 - How to use the probe: The FF310R has three user selectable sensitivity ranges: ‘Low’, ‘Medium’ and ‘High’. These ranges allow the technician to choose the degree of sensitivity most suitable to the particular detection being performed. 4.1 Checking the current sensitivity setting: The probe of the FF310R is built of coiled steel and can be bent as needed, in order to reach wires in congested or difficult areas.
6.10 The short circuit is located in the area where the audio/visual signal stops or changes significantly. 9 - Locating Open Circuits 6.11 When the test is completed, switch off the transmitter unit pressing the On/Off button and disconnect from circuit. 9.1 Observe the limits and safety precautions at all times (refer to the beginning of this handbook) 9.
• For identifying wires without load connected: Connect transmitter as described in section ‘9- Locating Open Circuits’ to the circuit to be identified, then proceed to scan all suspected wiring with the FF310R’s probe, until the flashing and beeping is at its maximum. In the case of tightly packed wires ( bundles, conduits, etc.), it may be necessary to spread these apart to facilitate the identification process of a particular wire.
13.1 Wire bundles and conduits: • Special care should be given in the case of tracing a wire inside a bundle or conduit when there is a split. In this case it may be possible to follow the wrong branch for a short distance and still receive a positive audio/visual indication.
13.3 Circuits with multiple loads or branches • • • When tracing circuits connected to, or which are powering multiple loads and/or branches (See Fig. 10), and when these circuits are active or live, the bulk of the current injected into the circuit by the FF310T will be directed to the shorted branch of the circuit. However smaller amounts of current (or stray currents) will flow to the other branches as long as these provide a path to ground (i.e. close the circuit).
15 - CT8002 Professional Circuit Tester 17 - Care of the Unit Instructions The FaultFinder is a precision instrument and should be treated as such. Damage caused by mistreatment is not covered by the warranty. 1- Hold tester by metal barrel and place free hand on bare (grounded) metal part of the vehicle. 2- Place tester point into connector or wire (pierce insulation if necessary). 3- Tester will light, buzz and vibrate when a positive voltage is detected.
Part # FF300MN0302EN © 1996-2007 General Technologies Corp.
